Periodic Table

The elements in the Periodic Table of Elements is arranged based on the increasing of

• the number of shell

• the number of proton

• the number of electron

• the nucleon number

The diagram shows a set-up of apparatus to investigate the reaction between sodium metal and water.

Which of the following is true about the above experiment

• Acidic solution is formed

• Salt solution is formed

• Alkali solution is formed

• Neutral solution formed

Argon atom has an electron arrangement of 2.8.8.

Which of the following is true for argon?

• Exist as diatomic atom

• Has high melting point

• Reacts with oxygen to form a compound

• It is in group 18 in The Periodic Table of Elements

Which of the following chemist arranged the elements in the Periodic Table of Elements in order of increasing proton number?

• Moseley

• Mendeleev

• Dobereiner

• Lothar Meyer

Which of the following statements best explain the stability of inert gases?

• Have octet electron arrangement except helium

• Can accept, lose or share electron

• Have 8 valence electrons

• Exists as polyatomic gases

What happen when a small piece of burning sodium is quickly placed into a gas jar filled with chlorine gas?

• Heat is absorbed by the gas jar

• Temperature remains constant inside the gas jar

• The white solid dissolves readily in organic solvent

• The white solid produced that dissolves in water

Which of the following elements are in Group 18 in the Periodic Table of elements?

• Helium and oxygen

• Helium and neon

• Hydrogen and oxygen

• Helium, hydrogen and oxygen

Which of the following properties can be used to show that copper is a transition element?

• It can conduct electricity in the solid and liquid states

• It forms coloured ions

• It is ductile and malleable

• It has a high density

Astatine is below iodine in Group 17 of Periodic Table.

Which of the following statements is true for astatine?

• Form basic oxide

• Exists as monoatom

• Solid at room temperature

• More electronegative than iodine

Element G is placed in Group 14 and Period 2.

What is the proton number for atom G?

• 2

• 6

• 18

• 18